Secondhand Löwenstein Luisa LM150TD Home Mechanical Ventilator

Objective AI Report

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Report date: 16.01.2026

Löwenstein Medical LUISA Home Mechanical Ventilator Analysis Report

Device Identification, Brand and Model Analysis

As a result of a detailed visual inspection, the device displayed has been identified as a mechanical ventilation (respiratory) device used for medical purposes. Based on the markings on the product’s handle, carrying case, and accompanying user manual, its brand has been confirmed as LÖWENSTEIN MEDICAL, and its model as LUISA. The typography on the device’s handle and front surface perfectly matches the original brand standards.

Originality and General Condition

Considering the high-quality material craftsmanship, the regular placement of brand logos, the brand-specific design of the screen interface, and the accompanying original carrying case (labeled LUISA), the product has been assessed as an original LÖWENSTEIN MEDICAL product. Its general cosmetic condition is rated as “very good”. No yellowing, cracks, deep scratches, or impact marks were visually detected on the device’s white and black plastic casing, rubber parts, or screen frame. The physical condition of the device suggests it has been used very little or meticulously preserved.

Screen Analysis and Usage Data

The device’s touch screen is functional, and the displayed menu provides precise data regarding the device’s technical history. The information on the screen is as follows:

• Mode Information: The device is in P-SIMV mode, waiting.
• Date/Time: The date displayed on the screen is 25.12.2023, time 22:21.
• Battery Status: According to the indicator at the top of the screen, the battery is 89% charged and is currently charging (lightning icon is active).
• Therapy Patient Usage Time: 364 hours 53 minutes. (364:53 h).
• Days Used: 17 days (17 d).
• Average Usage: Daily average of 1288 minutes (approximately 21.5 hours).
• High Frequency Therapy: 0 hours of usage is shown.

These data indicate that the device has been used for a relatively low duration for a ventilator, approximately 365 hours in total, but during the 17-day period it was used, it provided support to the patient for almost the entire day (close to 24 hours).

Technical Interface and Connection Ports

Upon examining the side panels and rear sections of the device, the following technical details were observed:

• Sensor and Connection Ports: On the left side panel of the device, a “P” (Pressure) input and an adjacent air outlet/inlet port are active. The sections labeled SpO2, CO2, and Neb (Nebulizer) are covered with black caps; while it cannot be clearly distinguished from the visual whether these ports are installed as modules or merely capped, the presence of the caps provides port protection.
• Patient Circuit Outlet: The main output port for the respiratory hose connection on the front bottom part appears clean and undamaged.
• Power Input: On the rear, there is a 12 V / 24 V / 48 V DC power input.
• Oxygen Input: On the lower rear section, there is a metal port for O2 input and technical warnings (< 30 l/min, < 1000 hPa) next to it.
• Buttons: On the rear panel, the Battery 1 (E1) and Battery 2 (E2) status indicator buttons, Alarm mute, and Menu buttons appear intact.

Accessories and Package Contents

The product set in the visual consists of main parts and consumables, including the device itself. The detected accessories are as follows:

• 1 unit of LÖWENSTEIN MEDICAL LUISA Main Device.
• 1 original black carrying/protection bag with brand logo and “LUISA” label.
• 1 device user manual (The booklet contains the phrases “LUISA Respiratory Devices” and “Suitable for TR LMT150TD type devices”).
• 1 Power Adapter (A standard black-cabled adapter suitable for the device, although brand/values are not fully legible on the adapter label).
• 1 Respiratory Circuit (Hose): Transparent, spiral patient hose.
• 1 Filter Set package: Original packaged spare filters with “REF WM 29652” and “Set 12 Protection filter” written on it.
• 1 black-colored accessory in a sealed bag, whose contents are not fully clear but appear related to the device (Likely an air inlet filter sponge).
• 2 small spare parts or connectors in transparent bags.

Mechanical and Electronic Component Assessment

Mechanical: The screw holes, plastic joints, and handle mechanism on the device’s outer casing are free of issues. The cooling/speaker grilles (perforated sections) are clean, and no dust accumulation is observed.

Electronic: The device is observed to be powered on and its software loaded. The screen brightness is appropriate, and no dead pixels are noticeable from the visual. The screen indicator shows that the internal batteries are holding a charge.

Areas of Use

This device is an advanced life support unit designed for use in home care settings or mobile situations for patients requiring invasive or non-invasive ventilation. It is suitable for patients with respiratory failure (such as COPD, ALS, and other neuromuscular diseases) discharged home after intensive care.

Potential Risks and Warnings

As a result of the visual analysis, no broken parts, disconnected cables, or “System Error” warnings were observed on the device. However, since respiratory circuits (hoses) and filters are single-use or patient-specific products for hygienic reasons, sterilization or replacement of the opened hose may be necessary in case it has been used. Although the device appears to be technically functional, calibration tests by an authorized biomedical technician are recommended before it is used on a patient.